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MCQs

Total Questions : 330 | Page 17 of 33 pages
Question 161. Which, among the following is the correct expression for an electric field?
  1.    E=F/C
  2.    E=F*C
  3.    E=F/Q
  4.    E=F*Q
 Discuss Question
Answer: Option C. -> E=F/Q
Answer: (c).E=F/Q
Question 162. In uniform fields, all points have ________ field strength.
  1.    Zero
  2.    Same
  3.    Infinity
  4.    Different
 Discuss Question
Answer: Option B. -> Same
Answer: (b).Same
Question 163. What happens when one material is rubbed against another?
  1.    The material becomes electrically neutral
  2.    The material becomes electrically charged
  3.    The material becomes negatively charged
  4.    The material becomes positively charged
 Discuss Question
Answer: Option B. -> The material becomes electrically charged
Answer: (b).The material becomes electrically charged
Question 164. Electric flux density is a function of_______
  1.    Volume
  2.    Charge
  3.    Current
  4.    Voltage
 Discuss Question
Answer: Option B. -> Charge
Answer: (b).Charge
Question 165. “Total electric flux through any closed surface is equal to the charge enclosed by that surface divided by permittivity”. This is the statement for?
  1.    Gauss law
  2.    Lenz law
  3.    Coloumb’s law
  4.    Faraday’s law
 Discuss Question
Answer: Option A. -> Gauss law
Answer: (a).Gauss law
Question 166. Gauss law is applicable for_________
  1.    Point charge
  2.    Sheet charge
  3.    Line charge
  4.    Point, sheet and line charge
 Discuss Question
Answer: Option D. -> Point, sheet and line charge
Answer: (d).Point, sheet and line charge
Question 167. The insulant between the two plates of a capacitor is called _______
  1.    Conductor
  2.    Semi-conductor
  3.    Dielectric
  4.    Superconductor
 Discuss Question
Answer: Option C. -> Dielectric
Answer: (c).Dielectric
Question 168. What happens to relative permittivity when actual permittivity decreases?
  1.    Increases
  2.    Decreases
  3.    Remains the same
  4.    Becomes zero
 Discuss Question
Answer: Option B. -> Decreases
Answer: (b).Decreases
Question 169. Calculate the actual permittivity of a medium whose relative permittivity is 5.
  1.    4.43*10¯¹¹F/m
  2.    4.43*10¯¹²F/m
  3.    4.43*10¹¹F/m
  4.    4.43*10¹²F/m
 Discuss Question
Answer: Option A. -> 4.43*10¯¹¹F/m
Answer: (a).4.43*10¯¹¹F/m
Question 170. What is the relative permittivity when the actual permittivity is 4F/m?
  1.    4.57*10¯¹¹
  2.    4.57*10¹²
  3.    4.57*10¹¹
  4.    4.57*10¯¹²
 Discuss Question
Answer: Option C. -> 4.57*10¹¹
Answer: (c).4.57*10¹¹

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